Clan MacIver or Clan MacIvor, also known as Clan Iver, is a Scottish clan recognised by the Lord Lyon King of Arms. The clan, however, does not have a chief recognised by the Lord Lyon King of Arms. Because of this the clan can be considered an armigerous clan. The clan name of MacIver is of Gaelic origin, derived from an Old Norse personal name. Various forms of the surname MacIver, like MacGiver, are considered sept names of several historically large Scottish clans, such as clans Campbell and Mackenzie. There exists a Clan Iver society in Fife, Scotland.

Clan Campbell is a Highland Scottish clan, historically one of the largest and most powerful of the Highland clans. The Clan Campbell lands are in Argyll and within their lands lies Ben Cruachan. The chief of the clan became Earl of Argyll and later Duke of Argyll.